I love chess and teaching ! I learned chess in middle school and stopped playing until a couple of years ago. Recently I have played in chess tournaments and play in parks and online. My hobby has become a passion. Daniel Hallback MBA, MSN, RN has 15 years of healthcare experience including eight years serving as a US Army medic. During his time in the military, he served for three years as an army instructor. Daniel has been a registered nurse for 10+ years. Daniel spent several years working as a traveling nurse. Daniel has since transitioned to working in value based healthcare.